I am currently working on an Arduino UNO R3 project and using an ADS1115 analog to digital converter to measure voltages. I currently have it set up to take differential readings. I am trying to adjust the gain to increase my precision with lower voltages. But have found my voltage readings are less accurate when I use a higher gain value that isn't the default 2/3. I have gone through the calculations step by step and I'm certain I am using the correct multipliers and that it isn't a rounding issue.
Does anyone have experience with this particular device?